A Review on Solid Lipid Nanoparticles for Topical Delivery of Anti-Inflammatory Drugs

Solid Lipid Nanoparticles (SLNs) have drawn a lot of interest as an advanced delivery mechanism for anti-inflammatory medications delivered topically. Submicron colloidal carriers, or SLNs, are made of biocompatible lipids and surfactants and have benefits such better skin penetration, controlled release, and increased drug stability. The composition of SLNs, which usually consists of solid lipids, surfactants, and co-surfactants, as well as common preparation techniques like high-pressure homogenization, ultrasonication, solvent emulsification-evaporation, and microemulsion techniques, are all covered in detail in this review. Anti-inflammatory medications work by penetrating the stratum corneum and focusing on deeper layers of the skin to reduce inflammation right where it occurs. By encouraging drug retention and offering a sustained release profile, SLNs improve this process. Notwithstanding these advantages, SLNs have a number of drawbacks, including as limited drug loading for hydrophilic medications, trouble scaling up, and possible physical instability. Numerous anti-inflammatory medications, such as piroxicam, diclofenac, ibuprofen, and indomethacin, have been effectively added to SLN-based topical formulations with encouraging outcomes in terms of enhancing patient compliance and therapeutic efficacy. This review discusses the present constraints and anticipated future developments in this area while highlighting the potential of SLNs as a safe and efficient platform for topical delivery of anti-inflammatory drugs.